That is easy once you've met Randman1.
He redid many pieces and gathered info from the club and other places. Simply find a paint shop that sells SEM paints and typically they will have a shelf of SEM aerosol cans.
Each can is $12-$15USD, depending where you go. You will finish the molding and sanding, clean well to remove any oils from your hands then spray with Plastic Adhesion Promoter, let dry, Texture Coating, let dry well, and Graphite. Here is a pic of the magic cans.
Plastic Adhesion Promoter 39863
Texture Coating 39853
I would have never thought about this if the Randman hadn't shown me the way in the early spring. To get the panel looking good, I had to make a normally bent section by the Bose emblem mold into a straight switch holder. JB Weld worked the best for building up material for me, Randman likes fiberglass and bondo. Then the sanding begins....almost all of it is by hand and it'* a slow process. If it doesn't look right, build back up and start again. Got low spots? build them up. Constantly waiting for curing in my case. Bondo is quicker. All the sanding and sculpting is why we have more pics of the dash in progress than anything else.